Point. I'm one of those who doesn't like naming of fandoms into groups. I watch Star Trek, yet I dislike the terms Trekkie or Trekker. Which, oddly, Firefox recognizes as legitimate terms.
Trekkie shows up in the Mac Lion built-in dictionary as "a fan of the US science-fiction television program
Star Trek", and Trekker is a redirect to Trekkie in the same dictionary.
I like the idea of fandom and other group names simply as a matter of convenience. I don't know about you, but in the event I ever find myself talking about a fandom I find it much easier to say something like "Trekkie" then "fans of Star Trek". So while I'm not particularly for the idea, I do give it a small amount of support.
Most fandoms don't have a series of special catch phrases.
Well maybe they should.
A surprising amount of fandoms actually
do have catch phrases, some of which have even gone beyond the popularity point of being a catch phrase and have moved into common usage. It's just that the smaller a fandom is the less solid and less well-known those catchphrases are. I mean Star Trek has "Beam me up Scotty" and "Capt'n I canna hold her much longer", Star Wars has "Luke, I am your father", Gurren Laggen has the whole "my drill is the drill" thing, we all know about the MLP stuff with how widespread it is these days, Pokemon has "Gotta catch em all", Lord of the Rings has "one ring to rule them all" (though that one isn't as widespread as the others, but when the fandom starts from a book you tend to get less present catchphrases), Doctor Who has "Exterminate, Exterminate", The Simpsons has "D'Oh!" (which is one that has spread to common usage), and I could keep going but you get my point. All fandoms have catch phrases, it's just that until a fandom becomes large enough we tend to call them "references" instead of catch phrases.